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Posted to users@tomcat.apache.org by "Vaidya, Omkar" <ov...@ptc.com> on 2024/01/05 09:55:55 UTC
Posting questions
Hi Team,
Tomcat Version - 9.0.62
Platform - Linux Platform
This is regarding like we have one customer issue where on Linux platform, we have configured our IOT-application (Thingworx), which is using Tomcat as a server.
So we are able to identify that even when we remove our application, Tomcat is creating a zombie (defunct) process, which is creating 200+ processes under the process table, which ultimately occupy all the OS resources and the application goes in a hung state. This issue is also reproducible on the Standalone Tomcat server also.
There are two scenarios mentioned below -
1. If this is relatable to Tomcat can you please suggest any article or documentation so that we can stop zombie process creation, if this is a known issue or there is only way to clear zombie (defunct) process from Processes table of linux.
2. Also, let us know if this is a Operating System specific issue like as it is reproducible only on Linux, So Linux os is the thing that creates the zombie (defunct) processes?
we are eagerly waiting for the response.
Thanks,
Omkar Vaidya.
RE: Posting questions
Posted by Simon Matter <si...@invoca.ch>.
> Refer to attached screenshot.
Attached screenshot? This is a public mailing list so your best option is
to provide information in posted text format, screenshots and other images
most likely won't make it through in a usable way :)
Regards,
Simon
>
> -----Original Message-----
> From: Jalaj Asher <ja...@eclinicalworks.com.INVALID>
> Sent: Friday, January 5, 2024 8:02 PM
> To: Tomcat Users List <us...@tomcat.apache.org>
> Subject: RE: Posting questions
>
> [You don't often get email from jalaj.asher@eclinicalworks.com.invalid.
> Learn why this is important at
> https://aka.ms/LearnAboutSenderIdentification ]
>
> Omkar,
> 2 questions
> 1. when you say processes what processes are you seeing being invoked and
> does it stop at 200 processes. May be a screen shot might help 2. does the
> tomcat have read write privilege on all its folders ? If not does giving
> those rights help ?
>
>
>
> -----Original Message-----
> From: Vaidya, Omkar <ov...@ptc.com>
> Sent: Friday, January 5, 2024 4:56 AM
> To: users@tomcat.apache.org
> Subject: Posting questions
>
> Attention! - This email has originated from an External Source outside of
> eClinicalWorks. Always use caution when opening attachments, clicking
> links, or when responding to this email. If you feel this is a phishing
> scam, please use the Phish Alert Report button in Outlook.
>
>
> Hi Team,
>
>
>
> Tomcat Version - 9.0.62
>
> Platform - Linux Platform
>
>
>
>
>
> This is regarding like we have one customer issue where on Linux platform,
> we have configured our IOT-application (Thingworx), which is using Tomcat
> as a server.
>
> So we are able to identify that even when we remove our application,
> Tomcat is creating a zombie (defunct) process, which is creating 200+
> processes under the process table, which ultimately occupy all the OS
> resources and the application goes in a hung state. This issue is also
> reproducible on the Standalone Tomcat server also.
>
> There are two scenarios mentioned below -
>
> 1. If this is relatable to Tomcat can you please suggest any
> article or documentation so that we can stop zombie process creation, if
> this is a known issue or there is only way to clear zombie (defunct)
> process from Processes table of linux.
>
> 2. Also, let us know if this is a Operating System specific
> issue like as it is reproducible only on Linux, So Linux os is the thing
> that creates the zombie (defunct) processes?
>
> we are eagerly waiting for the response.
>
>
>
> Thanks,
>
> Omkar Vaidya.
>
>
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RE: Posting questions
Posted by "Vaidya, Omkar" <ov...@ptc.com>.
Refer to attached screenshot.
-----Original Message-----
From: Jalaj Asher <ja...@eclinicalworks.com.INVALID>
Sent: Friday, January 5, 2024 8:02 PM
To: Tomcat Users List <us...@tomcat.apache.org>
Subject: RE: Posting questions
[You don't often get email from jalaj.asher@eclinicalworks.com.invalid. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ]
Omkar,
2 questions
1. when you say processes what processes are you seeing being invoked and does it stop at 200 processes. May be a screen shot might help 2. does the tomcat have read write privilege on all its folders ? If not does giving those rights help ?
-----Original Message-----
From: Vaidya, Omkar <ov...@ptc.com>
Sent: Friday, January 5, 2024 4:56 AM
To: users@tomcat.apache.org
Subject: Posting questions
Attention! - This email has originated from an External Source outside of eClinicalWorks. Always use caution when opening attachments, clicking links, or when responding to this email. If you feel this is a phishing scam, please use the Phish Alert Report button in Outlook.
Hi Team,
Tomcat Version - 9.0.62
Platform - Linux Platform
This is regarding like we have one customer issue where on Linux platform, we have configured our IOT-application (Thingworx), which is using Tomcat as a server.
So we are able to identify that even when we remove our application, Tomcat is creating a zombie (defunct) process, which is creating 200+ processes under the process table, which ultimately occupy all the OS resources and the application goes in a hung state. This issue is also reproducible on the Standalone Tomcat server also.
There are two scenarios mentioned below -
1. If this is relatable to Tomcat can you please suggest any article or documentation so that we can stop zombie process creation, if this is a known issue or there is only way to clear zombie (defunct) process from Processes table of linux.
2. Also, let us know if this is a Operating System specific issue like as it is reproducible only on Linux, So Linux os is the thing that creates the zombie (defunct) processes?
we are eagerly waiting for the response.
Thanks,
Omkar Vaidya.
CONFIDENTIALITY NOTICE TO RECIPIENT: This transmission contains confidential information belonging to the sender that is legally privileged and proprietary and may be subject to protection under the law, including the Health Insurance Portability and Accountability Act (HIPAA). If you are not the intended recipient of this e-mail, you are prohibited from sharing, copying, or otherwise using or disclosing its contents. If you have received this e-mail in error, please notify the sender immediately by reply e-mail and permanently delete this e-mail and any attachments without reading, forwarding or saving them. Thank you.
CONFIDENTIALITY NOTICE TO RECIPIENT: This transmission contains confidential information belonging to the sender that is legally privileged and proprietary and may be subject to protection under the law, including the Health Insurance Portability and Accountability Act (HIPAA). If you are not the intended recipient of this e-mail, you are prohibited from sharing, copying, or otherwise using or disclosing its contents. If you have received this e-mail in error, please notify the sender immediately by reply e-mail and permanently delete this e-mail and any attachments without reading, forwarding or saving them. Thank you.
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Re: Posting questions
Posted by Rob Sargent <rs...@xmission.com>.
On 1/5/24 07:31, Jalaj Asher wrote:
> Omkar,
> 2 questions
> 1. when you say processes what processes are you seeing being invoked and does it stop at 200 processes. May be a screen shot might help
> 2. does the tomcat have read write privilege on all its folders ? If not does giving those rights help ?
>
>
>
Do screen shots will make it through to the readers? Text from ps might
be safer.
RE: Posting questions
Posted by Jalaj Asher <ja...@eclinicalworks.com.INVALID>.
Omkar,
2 questions
1. when you say processes what processes are you seeing being invoked and does it stop at 200 processes. May be a screen shot might help
2. does the tomcat have read write privilege on all its folders ? If not does giving those rights help ?
-----Original Message-----
From: Vaidya, Omkar <ov...@ptc.com>
Sent: Friday, January 5, 2024 4:56 AM
To: users@tomcat.apache.org
Subject: Posting questions
Attention! - This email has originated from an External Source outside of eClinicalWorks. Always use caution when opening attachments, clicking links, or when responding to this email. If you feel this is a phishing scam, please use the Phish Alert Report button in Outlook.
Hi Team,
Tomcat Version - 9.0.62
Platform - Linux Platform
This is regarding like we have one customer issue where on Linux platform, we have configured our IOT-application (Thingworx), which is using Tomcat as a server.
So we are able to identify that even when we remove our application, Tomcat is creating a zombie (defunct) process, which is creating 200+ processes under the process table, which ultimately occupy all the OS resources and the application goes in a hung state. This issue is also reproducible on the Standalone Tomcat server also.
There are two scenarios mentioned below -
1. If this is relatable to Tomcat can you please suggest any article or documentation so that we can stop zombie process creation, if this is a known issue or there is only way to clear zombie (defunct) process from Processes table of linux.
2. Also, let us know if this is a Operating System specific issue like as it is reproducible only on Linux, So Linux os is the thing that creates the zombie (defunct) processes?
we are eagerly waiting for the response.
Thanks,
Omkar Vaidya.
CONFIDENTIALITY NOTICE TO RECIPIENT: This transmission contains confidential information belonging to the sender that is legally privileged and proprietary and may be subject to protection under the law, including the Health Insurance Portability and Accountability Act (HIPAA). If you are not the intended recipient of this e-mail, you are prohibited from sharing, copying, or otherwise using or disclosing its contents. If you have received this e-mail in error, please notify the sender immediately by reply e-mail and permanently delete this e-mail and any attachments without reading, forwarding or saving them. Thank you.
CONFIDENTIALITY NOTICE TO RECIPIENT: This transmission contains confidential information belonging to the sender that is legally privileged and proprietary and may be subject to protection under the law, including the Health Insurance Portability and Accountability Act (HIPAA). If you are not the intended recipient of this e-mail, you are prohibited from sharing, copying, or otherwise using or disclosing its contents. If you have received this e-mail in error, please notify the sender immediately by reply e-mail and permanently delete this e-mail and any attachments without reading, forwarding or saving them. Thank you.
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